Cosmological Model with a Viscous Fluid in a Kaluza-Klein Metric

Details Cosmological Model with a Viscous Fluid in a Kaluza-Klein Metric Cosmological Model with a Viscous Fluid in a Kaluza-Klein Metric

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.301...47r&link_type=abstract

Astrophysics and Space Science, Volume 301, Issue 1-4, pp. 47-49

Mathematics

Logic

14

Cosmological Model, Viscous Fluid, Kaluza-Klein Metric, Time-Dependent Equation Of State

Scientific paper

A Cosmological model with a viscous fluid in Kaluza-Klein metric is obtained assuming a time-dependent equation of state. The solution is in fact a generalization of an earlier work by Hajj and Boutros for a perfect fluid. It is also found that dimensional reduction of the extra space takes place such that the five-dimensional universe naturally evolves into an effective four-dimensional one. The dynamical behavior of the model is examined and it is also found that with a decrease in extra space the observable 3D space entropy increases thus accounting for the large value of entropy observable at present.

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